Photographic film or plate pack



Sept 6, I

M. RQMANowlcz ET AL PHOTOGRAPHIG FILM OR PLATE PACK Filed June 2,1192'6 2 SheetseShei l 1N ve N rua@ MAE/41V @Maman/cz 1,641,867 Sept. 6, 1927' M, ROMANOWICZ ET A; l

PHOTOGRAPHIC FILM OR PLATE PACK Filed June 2. 1926 2 Sheets-Sheet 2 l the same side, Athefront si'es of the` Patented Sept. 6, 1,927".v I

I UNITED STATES .PATENT carica.

MARIAN nomANowIcz AND JOHANN noiarnimwicz, or VIENNA,v nostrana.

rnoro'ennrnrc rima on PLATE mem Application filed June 2, 1926, Serial No. 113,195, and in Austria August 4, 1925,.

Our invention .relates to lates either rigid or iiexible o glass, celluoid or other suitable material provided with a pulling strip and aprotecting sheet. Such plates are usually packed in the l,form of piles in boxes of opaque material rovided with an exposition4 o ening an a slot through which the pulling stri s extend to the' outside in such a manner t at .by pulling the pulling strip ofthe uppermost plate of the pile, this uppermost plate is lirst pulled backwards over the next following plate, then sinks down to the bottom of the pile of not yet exposed lates and finally slides forwards below the owermost plate of such latter pile s0 that it is covered thereby while the said next following plate becomes the uppermost plate of the pile and is brought into position ready for exposition.

of the protective sheet heretofore usedis open to the objection that while a being ulled backwards and forwar s again this p ate or the neighbouring plates are liable to be injured by the pulling stri or by one plate sliding over the other. oreover. the plates slipping below the pile are liable to get into an oblique position.

The object vof lour invention is to meet 3o these objections and to provide a plate so constructed that it can be reliably exchanged without any risk of damage to it or the neighbouring plates.

With this object in view our invention consists in that each plate has'attached to vone and the same edge of it a protecting sheet of substantially the same length as the plate and a pulling strip rof at least double the length of the plate, the -pulling strip being interposed between the protecting sheet and the plate. v

' When arran ed in al ilethe edges of the Kplates to whic ,the p lin stri s and the protecting sheetsgare attac ed,

referred to as [the front ed es, are all ihn.

IV --and that the pulling strip of this top p ate of the pile extends along the backof this top plate, that is tol say along the side of 60 the plate. adjacent to the next following or second plate of the ile, then down the back side of the pile an thence to the front side of the pile again and outwards through l the usual slot passing below the pulling strip of the Said second plate of the pile and so on as is customaryl intplate pi es of this photographic The arrangement of the pulling strip and,

late is' ereinafter class.l The protecting sheet of the top plate of the pile is thus according to our invention located between the pulling strip .of the top plate and the top face of the second plate and so on. Below the lowermost plate of the pile there is provided a spring supported bottom plate of about the same size as the photographic plate permanently orcin upp wards the pile above it which the pu ing strip of the lowermost photographic plate passes on being pulled outwards. If desired we may interpose between the bottom face of the plate and the pulling strip a backin sheet of substantiallyy double the len h o the plate and attached to the same e ge of the plate as thepulling .strip and the rotectin sheet.v In the ile the backing s eet of eac plate follows tllie pulling strip of the same plate, but need not project outwards .through the slot ythrough which the pulling strip extends to the outside. j

In the annexed drawings wel have shown by way of example two embodiments of our invention.

Fig. 1 is a sectional side elevation of a photographic plate provided with a protecting1 sheet andy a pullin strip.`

ig. 2 is an inverte plan view of the same.

l and 2 arranged in a box -and illustrating .on a .somewhat exaggerated scale various plate.

Figs. 3', 4, 5 and 6 show in sectional side 4elevation a pile of plates as shown in Figs.

Figs. l and 8 are views similar to Figs. 1

1 and 2 showing a late provided with a backing sheet, a pul ing strip vand a protecting sheet.v

Fi s.l 9, 10, 11 and12' are views correspon ing to Figs. 3 to`:-6 illustrating the various positions of the' late shown in Figs. 7 and 8 while being most position below. t e bottom4 In Fi s. 'l and`2, is. the p plate cit er rigid or iiexible 0 or desired type. To one edge 2 of this plate are attached preferably by cementing a protecting sheet 3 of substantially the same width and length as the plate and a pulling strip 4 of more than double the length of the plate, the pulling strip 4 being arranged any known led from the upper` etween the bottom face or back of the suitable flexible material preferably imperviousto light having the required strength,

I of the next following plate 11.

fil)

1 third plate 21 While such as black paper.

Fig. 3 shows a pile of any, desired number of plates, 1, l1, 21 arranged in the 'form of a pile say three, in a rectangular box of about the same width and slightly more than double the length of the plates. tecting sheet 3 of the uppermost plate 1 of the pile is in direct contact with the top face The pulling strip 4 of the plate 1 extends from its front edge 2 to its rear edge, along the rear side of thel'pile and finally extends forwards below the pulling strip 14 of the second plate .11 from top and out through the slot 31 of the box 30.l Simillarly the protecting sheet 13 of the second plate from top is in direct contact with the its pulling strip 14 passes down the rear side of the pile and for wardsto the slot 31 between the pulling strip 4 of the top plate 1 and the pulling strip 24 of the third plate from top of the pile and so on.

`The lowermost plate 21 of the pile need not be provided with a protecting sheet nor with a pulling strip since usually the lowermost pla e is not exchanged. The supporting plate 22 of the pile, made of card board or other suitable material permanently forces upwards the platesabove it against plate 11 by the protecting sheet the top wall of the box 30 by springs 32. Its rear edge serves also for folding round it the pulling strip of the lowermost plate of the pile if such strip be provided. The rear edges of the protectingv strips 3 13, 23 preferably slightly project beyond t e rear edges of their respective plates and are sharply bent downward at such rear edges for a purpose described later on.

By pulling theA pulling strip 4 of the uppermost plate 1 of the pile throughA the slot 31, see Fig. 4, the plate 1 is first moved backwards, but its pulling strip 4 is held out of contact with the top face of the second 3 so that neither the plate 1 nor its pullin strip 4 do not slide along in{ contact wit and rub against the top face of the second plate 11 and injure it. Nor does the protectin sheet 3 slide along and rub against the top ace of the second plate 11 because this sheet slightly adheres to the vtop face of the second plate 11 and therefore as the front edge2 of the plate 1 and the protecting sheet 3 are pulled backwards the front part of the sheet 3 is Y folded down on'its rear part at 5 and it is not the protecting sheet 3 bodily, but only the bight 5 that moves along the top face of The prothen passes down the second plate 11 ^while the body of the protecting sheet is simply raised or rolled olfy the late 11 Without sliding along or rubbing against the latter, as is clearly seen in Fig. 4.

When the plate 1 has reached its extreme rearwardposition shown in Fig. 5 and its front edge 2 has come clear of the rear side of the pile, the projecting sheet 33 of this plate is turned up against this rear side of the pile and the rear bights of the pulling strips 14, 24 of the plates 11, 21. As the pulling of the strip 4 is continued the front edge 2 of the plate 1 slips below the pulling strip 140i the next plate 11 of the staple thl protecting sheet 3 of the plate 1 being folde or rolled down on the top side of plate 1 without rubbing against the same and thus protecting this top side of the plate 4 against injuring by the pulling strip 14 as isclearly seen in Fig. 5. Finally the fully slipped under the supporting plate 32 and the pile of plates 11, 21. The bent rear edge of the protecting sheet 3 is thus caused to engage the rear end If now the pulling strip 14 of the next plate 11 is pulled outwards the plate 11 would slip between the pulling strip 24 of the plate 21 and the protecting sheet 3 since the rear edge of this protecting sheet 3 engages the rear edgeof the plate 1, Fig. 6.

plate 1- reaches I lthe position shown in Fig. 6 in which it has of the plate 3, Fig. 6.

Thereby any injuring rto the top face of the plate 1 is prevented.

While the arrangement above described is fully satisfactory in' case it is the top face of the plates which is sensitized or rovided with 'a sensitized coatin it woulc be objectionable in the case o plates the bottoni face of which is sensitized or provided with a sensitizedcoating because owing to the fact that the bottom face of the plate 1l, Fig. 6 must slide along and consequently rub against the protecting sheet 3 next below it, the bottom face is liable to be inJured. Therefore we prefer to use backing sheets of some flexible some-what elastic material impervious to light such as black paper and to permanently attach them to the front edge of theassoeiated platesyas shown 1 n Figs. 7 and 8. In these, 1 is the plate, 2.15 the front edge, 3 its protecting sheet, 4 its pulling strip and 6 its backing sheet. .The width of the backing sheet is substantiallyv the same as that of the plate and of'its p rotecting sheet, While the length of the backing sheet having its front end permanently attached t-o the edge 2 of the plate is slightly less than that of the pulling strip, but preferably at least twice the length of the plate. The backing sheet 6 is located between the bottom face of the plate and its 'pulling strip'and the backing sheet 6 and the pulling strip 4v are located between the plate 1 and the protecting sheet/n3. The plates thus equipped are again packed in a pile in a box lll!) llO' llfll l having a slot 31 for'the; ree ends of the pulling st rip to pass throug tothe outside as shown 1n Fi s. 49 to 12 in exactly the same manner as in Figs. 3 to 6 while the free ends of the backing stri s 6 are prevented from moving forwards by any suitablev means. Assuming the uppermost plate 1 of the' pile has been brought to the bottom of the pile by pulling its ulling. strip 4 into the osiexactly like the protecting sheet 3 in the arrangementdescribed with reference to'Figs.

` 3 to 6. The backingsheet 16 held between the bottom side of the plate andthe pullingr strip must, of course, follow, the pulling strip forming a bight 17 below the plate 11 and in rear of the pile until the front end 2i of the plate is about to slip below the pile. As the pullin of the strip 14 is-'cntinued the plate 11 s ips between the bottom part of its own backing stri 16 and the bottom part 26 of the next fo lowing plate 21 of the, ile as seen in Fig. 11. ,This bottom parto the backing strip 16 being prevented as above stated from moving forward through the slot 31 it leaves unaffected the protecting sheet 3 immediately 'below it even 1f the rear edge of the rotectin sheet is not bent downwards. While the ront edge 2 of ther lates 1 moves forwards below the front en of the backing sheet 26 the bight 17 of the backing sheet 16 will fold or roll f down on the top face of its front part and therefore'will not slide or rub neither onv the bottom face of its plate 11, as is clearly seen in Fig. 11. Thus any injury tov any of the plates, protecting sheets and backing sheets is fully avoided. Finally the parts reaclrthe position shown in Fig. 12 the protecting sheet 13 being flat on the top face and the backing sheet 5 bein folded on the bottom face of the plate 11. he same operation is repeated in exchanging the other plates of the pile.

The lowermost plate of the pile may or not be provided with a pulling strip mii' van protecting sheet and backing sheet.

The use o f the rotecting sheets together with tlie backing s ieets is also advantageous with plates havin# a sensitizedtop face as by their combined action the plate is prevented from working sideways and readilyslips into a pile even if the latter is acted upon b springs. In this case the uppermost p ate of the ile which on being 'exchanged slides on t e bottom of the box 3() need not be provided with va backing sheet.

From the above description -of ,the arrangement it will be understood that any risk of injury to the plates during exchanging is avoided with certainty'and that` the i strip being -located between the action of light.

What .we claim` is: f.

1. In combination withv a photographic late, a protecting lsheet .anda pulling strip th of which are attached to the same edge of the plate, the protecting sheet bein of substantially the same length and widt n as the plate, the pulling strip being at least twice as long as the plate and the pullin strip being located between the plate an the protecting sheet. A

2. The combination vof a lurality of photographic plates each of which is rovided with a protecting sheet and a pul ing strip both of which are attached to the same edge of the plate, the protectin sheet bein of substantially the same lengt and widt as the plate, the pullin strip being at least twice as lon as the p ate and the pullin strip being ocated between the plate an the protecting sheet, the plates being arranged in a pile, the pulling stri s of the successive plates passlng from t e front ed es of their associated plates to the` re'ar en s thereof, then down the said pile and then forwards again underneath the pulling strip of the next following plate from to with a box adapted to receive thesaid e and having ,a slot in itsA front end, the ree plates are also protected against undesired ends of the pulling strip passing through late, a protecting sht and a pulling strip Y th of which are atta hed .to the same -edge of the plate, the. protecting sheet bein of substantiall. the same length and wid as the plate, te pulling strip being at least twice as long as the plate and the pullin plate an the rotecting sheet and a backing sheet attac ed to the same edge of the plate as the said ulling strip and protecting sheet, the said iackingsheet being located between the lplate and the pulling strip and being of substantially the same width as the plate and being of a length greater than that of the plate. o Y

4. The' combination of a plurality of photogra hic plates each of w ich is rovided wit a protecting sheet and a pul ing strip both of which are attached to the same edge of the plate, the protectin sheet bein of substantially the same lengt and widt as the plate, the pullin strip. being at least twice as long as the p ate and the pullin strip being ocated between the plate ian the protecting sheet and with a. backing sheet attached to the same edge of the plate as the said ulling strip and' protectin sheet, the sai backing sheet being locate between the plate and the-pulling strip and being of substantially thesame width as the plate and being of a 'length eater than that at the plate, the' plates being arranged im y in a pile, the pulling strips and backing sheets of the successive plates passing `from the front edges of their associated plates to the rear ends thereof, then 4down the said pile and then forwards again underneath the pulling strip of the next following plate from top, with a box adapted to receive the said pile and having a slot in its front end,

the free ends of the pulling strip passing through the said slots to the box and with means for preventing the said backing sheets from moving out lof the bof Y In testimony whereof we have aixed our signatures. MARIAN ROMANOWCZ. JOHANN lROMANVVICZ.

outside of the l() 

